[ 2013.225972][T15987] br0: port 1(dummy0) entered blocking state
[ 2013.226204][T15987] br0: port 1(dummy0) entered disabled state
[ 2013.226418][T15987] dummy0: entered allmulticast mode
[ 2013.228039][T15987] dummy0: entered promiscuous mode
[ 2013.261547][T15988] br0: port 1(dummy0) entered blocking state
[ 2013.262297][T15988] br0: port 1(dummy0) entered forwarding state
[ 2015.198136][   T12] dummy0: left allmulticast mode
[ 2015.198693][   T12] dummy0: left promiscuous mode
[ 2015.198931][   T12] br0: port 1(dummy0) entered disabled state